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treadmilltech
treadmilltech, Technician
Category: Exercise Equipment
Satisfied Customers: 5645
Experience:  20+ years experience repairing exercise equipment with emphasis on Nordictrack/Proform and Horizon
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I have a Sears - lifestyler 3500a stationary bike Model #831.287.264

Resolved Question:

I have a Sears - lifestyler 3500a stationary bike Model #831.287.264 , SN #BO78201.
This unit has a monitoring device (ERGOMETER) that tells the rider time, distance, and speed.
I replaced the chain and in doing so the sensor fell off of the bike and I do not know where to reattach it. (REPEAT - THE "SENSOR" THE DEVICE THAT PLUGS INTO THE DIGITAL MONITOR. ABOUT 3/4" WIDE X 1" LONG.

HOPE YOU CAN HELP.
[email protected]
Submitted: 6 years ago.
Category: Exercise Equipment
Expert:  treadmilltech replied 6 years ago.
It is mounted below the crank assembly. Here is a blow up diagram of your unit and the part you are looking for is part #'s 20 and 47.

http://www.searspartsdirect.com/partsdirect/partsdirect/showSubComp.pd?imageUrl=http%3a%2f%2fc.searspartsdirect.com%2flis_png%2fPLDM%2f00054694-00001.png
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